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121
RESULTS

Media Type
109
texts
7
audio
4
movies
1
data
Availability
114
Always Available
7
Available to Borrow
Topics & Subjects
45
vacuum tubes
31
Vacuum Tubes
28
Radio
22
VACUUM TUBES
20
tube
19
NASA Technical Reports Server (NTRS)
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Collection
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Creator
19
nasa technical reports server (ntrs)
17
radio sociedade do rio de janeiro
3
bureau of naval personnel
3
lewis, elmer hugh, 1889-
2
bucher, elmer eustice, 1885-
2
noble murray eberhart
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Language
94
English
1
French
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